-20=-3+2(a-8)

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Solution for -20=-3+2(a-8) equation:


Simplifying
-20 = -3 + 2(a + -8)

Reorder the terms:
-20 = -3 + 2(-8 + a)
-20 = -3 + (-8 * 2 + a * 2)
-20 = -3 + (-16 + 2a)

Combine like terms: -3 + -16 = -19
-20 = -19 + 2a

Solving
-20 = -19 + 2a

Solving for variable 'a'.

Move all terms containing a to the left, all other terms to the right.

Add '-2a' to each side of the equation.
-20 + -2a = -19 + 2a + -2a

Combine like terms: 2a + -2a = 0
-20 + -2a = -19 + 0
-20 + -2a = -19

Add '20' to each side of the equation.
-20 + 20 + -2a = -19 + 20

Combine like terms: -20 + 20 = 0
0 + -2a = -19 + 20
-2a = -19 + 20

Combine like terms: -19 + 20 = 1
-2a = 1

Divide each side by '-2'.
a = -0.5

Simplifying
a = -0.5

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